| 8939300 |
Friction/elastomeric draft gear |
Donald E. Wilt, Keith A. Salis, Rosie Galindo, Robert J. Pokorski, Kris C. Jurasek |
2015-01-27 |
| RE44177 |
Railroad car energy absorption apparatus |
Michael D. VanMaldegiam, Erik Jensen, Donald E. Wilt, Michael S. Dillon |
2013-04-30 |
| 8201504 |
Railcar constant contact side bearing assembly |
Erik Jensen, Paul B. Aspengren, Michael D. VanMaldegiam, Paul A. Perlongo, Mark W. Stanek +1 more |
2012-06-19 |
| 8056486 |
Railroad hopper car hatch cover |
Bradley J. Haymond |
2011-11-15 |
| 7784410 |
Constant contact side bearing assembly for a railcar |
Paul B. Aspengren |
2010-08-31 |
| 7325499 |
Constant contact side bearing assembly for a railcar |
Erik Jensen, Paul B. Aspengren |
2008-02-05 |
| 7275487 |
Constant contact side bearing assembly for a railcar |
Paul B. Aspengren |
2007-10-02 |
| 7152534 |
Constant contact side bearing assembly for a railcar |
Paul B. Aspengren |
2006-12-26 |
| D529828 |
Measuring tool |
Paul B. Aspengren, Michael S. Dillon, Joseph M. Ingraham, Raymond E. DeGraw |
2006-10-10 |
| 7044061 |
Railroad car energy absorption apparatus |
Michael D. VanMaldegiam, Erik Jensen, Donald E. Wilt, Michael S. Dillon |
2006-05-16 |
| 6957611 |
Constant contact side bearing assembly for a railcar |
Paul B. Aspengren |
2005-10-25 |
| 6862999 |
Railroad car energy absorption apparatus |
Michael D. VanMaldegiam, Erik Jensen, Donald E. Wilt, Michael S. Dillon |
2005-03-08 |
| 6792871 |
Railroad car energy absorption apparatus |
Michael D. VanMaldegiam, Erik Jensen, Donald E. Wilt, Michael S. Dillon |
2004-09-21 |
| 6341422 |
Method of manufacturing a railroad car apparatus |
— |
2002-01-29 |
| 6141853 |
Method of manufacturing and energy absorption apparatus for a railroad car |
— |
2000-11-07 |
| 6092470 |
Railroad car side bearing with thermal insulator |
— |
2000-07-25 |
| 4892170 |
Portable ladder assembly |
— |
1990-01-09 |
| 4702645 |
Slipline adjustable manhole seal |
Harry W. Skinner, James W. Skinner, William O. Skinner |
1987-10-27 |
| 4619555 |
Slipline adjustable manhole seal |
Harry W. Skinner, James W. Skinner, William O. Skinner |
1986-10-28 |